A hidden item placed in a movie, television show, or otherwise visual media for close watchers.

Originates from the the 1975 movie "The Rocky Horror Picture Show," when the cast had an Easter Egg hunt but most of the eggs went unfound. They can be seen throughout the film in various locations (such as under Frank N. Furter's throne).

The framed picture of Julia Roberts inside the character's home was an Easter Egg inserted by the director.

1) A painted egg, often hidden by the Easter bunny on Easter. May also be a chocolate egg with some sort of filling.
2) A secret, hidden inside a video game, DVD movie, or even one of Strong Bad's e-mails. Often, it's not needed to progress a story.

Also refers to a piece of "unrated material" that has been added to a DVD, but is not part of the visible menu. Usually happened upon by moving the cursor in a cardinal direction that is not in the general flow of the menu selections.

In a vertical listing of a menu, moving the cursor left or right might allow you to happen upon an easter egg.

An unexpected aspect of a video game that is often hard to find and is not an aspect of story line.

In Grand Theft Auto Vice City there is a specific ramp, where if you hit it just right on your motorcycle you go through a window in to a room containing an easter egg. In this case the easter-egg is a statue of an actual easter egg.